Portable milling-tool.



Patented Mar. 4, 1913.

Z SHEETS-SHEET 1.

PORTABLE MILLING TOOL.

APPLICATION FILED MAR. 23, 1912'.

W. BENNINGTON & J. GUNZENHAUSER W. BENNINGTON & J. GUNZENHAUSER.

PORTABLE MILLING TOOL.

APPLICATION FILED MAR. 23 1912.

Patented lYIar. 4, 1913. g

2 SHEETSSHEET 2.

' high efliciency con 7 UNITED STATES "PATENT OFFICE.

Pennants. marina-econ Specification 01 Letters Patent,

Patented Mar. 4, 1913.

L iieation filed March 23, 1912. Serial No. 685,856.

To an 'LUILUIfl/ it may concern:

Be it known that we, WILLIAM BENNING- TON and JACOB Gnnzsunaosan, citizens of the United States, and residents of the'city of Chicag county of Cook, and State of.

Illinois, have invented certain new and-useful Improvements in Portable Milling- Tools, of which the following is a specification.

Our invention relates to portable milling tools and more specifically to a device of this character designed especially for use in dressing rivet heads.

The object of 'our invention is the production of a device of the character mentioned which will be of durable and economical construction, one which it will be safe to manipulate, and one which will be of in use; I

Other objects will appear hereinafter.

With these objects in view, our invention consists in the combinations and arrangements of parts hereinafter described and claimed. I

' Our invention will be more readily understood by reference to the accompanyingdrawings forming a part of" this specification, and in which- Figure 1 is a side elevation tool Iembodying our bottom plan view of the tool, Fig. 3 is a transverse section taken on line it u of Fig. 2, Figs is a transverse section taken on line '0 o of Fig. 5, Fig. 5 is a longitudinal section taken on substantially line -w w of Fig. I, Fig. 6 is a sectional end view-of the mob-Figs. 7, 8 and 9 are transverse'sections taken on lines a: m, y y and z a, respectively, of Fig. 5, and Fig. 10 is a plan view of one of the cutters which are used in the tool.

The preferred form of construction, as illustrated in the drawings, comprises a substantially cylindrical body 1 which is mounted upon a shank 2, the tapering inner end of said'shank removably engaging a tapering socket 3 formed for the reception thereof in one end of said body. A transversely extending opening 4 is provided in the body 1, which intersects with the bottom of socket. 3, into which a key or other suitable tapering tool may be inserted of a milling for effecting ready forcing of the shank 2 1o disengagement, as will be readily understood. The outer end oi the shank 2 i of invention, Fig. 2 is a I the usual tapering form for Insertion into in conjunction with the tool.

The opposite end of the body '1 is proplurality of equally spaced sockets .6 which of the cutters 8 which are arranged as clearly shown in Figs. 5 and 6, so that, when the body 1 is properly rotated, the cutting edges 8 of said cutters will be adapted to, operate upon any surface into which the same are brought into contact to 'efiect dr'essingthereof. Said edges 8 are preferably. of the form shown, in order to adapt the same for use in dressing or trimming the head of a rivet. The heads of the cutposed recesses 2) provided in the head 5 which serves to positively hold the same tersbeing locked in position against longi-' tudlnal movement by means of set screws clearly shown in Fig. (ijthe periphery of said head being cut away at 10 for the accommodation ofsaid screws. 7

The body 1 is rotatablyanounted in a sleeve ll, longitudinal movement. of said body in said sleeve being prevented by the stationary collar 12 which is formed adja cent the forward end of said body and a removable collar 13 which is secured by screws 14 to the opposite end of said body, a fiber ring 15 being preferably interposed between the adjacent edges of the collar 13 and the sleeve 11 to alleviate friction. Also. the central portion of the body 1 is reduced in order to reduce the surface of the body 1 which is engaged by the sleeve 11 and thereby lessen the friction between said members.

upon which projecting posts 11'. as clearly shown in Fig. 9. lnclosiug the. outer cud portion of the body 1 is a sleeve litthe rearward end of which is scculcd y means of screws 19 to the posts ii. The sleeve 18 serves as a gage for the cutters o. limiting or gaging the dcpth of cutters. it being clear that, when in opera lion. ihc cutters will be permitted to cut into vided with a head 5 in which is formed a open in the end of said body. The sockets 6 are designed for engagement by shanks 7 ters 8 engage substantially radially dis- 10 which are threaded in the head 5,'as

'lhrcaded upon the sleeve 11 is a ring 16 are equally spaced outwardly ihc cut which may be taken by Said any conventional holder which may be used against relative rotary 1no\-'e1nent-,-saidcut- I I ber 11.

the work operated .npon until the outer end of the member 18 contacts the surface of the work, when the cutting operation will cease. This beingso, it will be seen that adjustment of the depth of the cut bythc cutters will be effected by longitudinally adjusting the position of the member 18 relative to said cutters and hence relative to the sleeve 11 which is fixed against longitudinal move ment relative to said cutters. Adjustment of the member 18, as above referred to, is efiected by rotating the sleeve 1.]. relative to the member 16 and hence said member 18, it being clear that upon rotation of the member 11, the member 16 and hence the member 18, by virtue of the threaded connection between the members 11 and 16, will be moved longitudinally. One end of the member 11 is formed with radially extending perforations 20 into which the point of a tool may be inserted for efiecting this rotation of the mem- The member 16 and hence the member 18 are locked in positions of adjust nient relative to the member 11 by means of a. lock-nut 21 which is threaded upon the latter for engagement with one extremity of the member 16. The nut 21 is provided with recesses 22 into which the point of a tool may be inserted for effecting this rotation thereof. With the arrangement set forth, it will be seen that upon the member 16 having been adjusted upon the member-11, the nut 21 will be moved into engagement with the former to securely lock the same in the desired position. The member 18 formed with openings 23 through which the cutters and the work operated upon may be viewed when the tool is in operation, said openings also affording access to the heads of screws 10 for adjusting the cutters 8. The member 18 in addition to serving as a gage, as above set forth, also serves in the capacity of a guard, it being clear, that saidmember, as arranged, will be adapted to prevent the fingers or hand of the operator contacting with the blades dur ing operation of the device.

Interposed between the sleeves 11 and 18 is a third sleeve 24 in which the body 1 is rotatably mounted, the latter being locked against longitudinal movement in said sleeve by reason of the forward extremity of said sleeve engaging the head 5 and the opposite extremity of said sleeve engaging a shoulder 13 formed upon the collar 13. The sleeve 24 is formed with longitudinally extending elongated slots 25-to provide clearance for the posts 17 of the gage carrier 16, and a substantially rectangular slot 26 is provided in the sleeve 24 to alford access to the locknut 21 in rotatably z'idjusting the same. The rearward end of the sleeve 24- is formed with a slot 27 which is adapted for registration,

with the heads of screws 14; in order to gain access to the latter for attaching or detaching the collar 13, and the opposite end of said sleeve is formed with an oil hole 28 for lubricating purposes.

In using the tool, the outer end of the shank 2 is secured in the holder in conjunction with which the tool is used, the power shaft which is connected with the holder being preferably of the flexible type so as to permit of free manipulation of the tool. The sleeves 18 and 24 are then engaged by one or both hands, said sleeves thus constituting a grip whereby the tool may be pressed into engagement with the work which it is desired to dress. Since the members 18 and 24 serve in the capacity of a grip, the outer surfaces thereof are knurled so as to prevent slipping.

A tool of the construction set forth is simple and economical, hence may be manu factured at a low cost,.the same may be readily manipulated to effect the expeditious dressing of bolt heads or the like, and the construction is such to readily becoming inoperative. The cutters 8 are removable so that cutters of different sizes may be used if desired.

"While we have illustrated and described the preferred form of construction for carrying our invention into effect, this is capable of variation and modification without departing from the spirit of the invention. We, therefore, do not wish to be limited to thecxact details of construction set forth, but desire to avail ourselves of such variations and i'nodilications as come within the scope of the appended claims.

Patent, 1s:

1. A tool of the character described comprising a substantially cylindrical body; a plurality of cutters arranged at one end of said body; a sleeve in which said body is rotatably mounted; means for holding said body against longitudinal movement in said sleeve; means connected with and longitudinally adjustable upon said sleeve for gaging the depth of the cut of said cutters; and rotatable manually adjustable means for securing said gaging means in positions of longitudinal adjustment relative to said sleeve, substantially as described.

2. A tool of the charagtcr described comprising a substantially cylindrical body; a plurality of cutters arranged at one end of said body; a sleeve in which said body is rotatably body against longitudinal movement in said sleeve; means connected with and longitudinally adjustable upon said sleeve for gaging the depth of' the cut of said cutters; and a nut threaded upon said sleeve for locking said gaging means in positions of longitudinal ad ustment relative to said sleeve, substantially as described.

claim as new and desire to secure by Letters Having described our invention, what wemounted; means for holding said as to not be susceptible 3. A tool of the character described comprising a substantially cylindrical body; a plurality of cutters arranged at one end of said body;a sleeve constituting a grip in which said body is rotatably mounted; means for holding said body against longitudinal movement in said sleeve; means in threaded connection with said sleeve for longitudinal adj ustn'ient relative thereto for gaging the depth of the cut of said cutters; and means for locking said gaging means in positions of longitudinal adjustment upon said sleeve, substantially as described.

A tool of the character described com prising a substantially cylindrical body; a plurality of cutters arranged at one end of said body; a sleeve constituting a grip in which said body is rotatably mounted; means for holding said body against longitudinal movement in said sleeve; means in threaded connection with said sleeve 'for longitudinal adjustment relative thereto for gaging the depth of the cut of said cutters; and a lock-nut for locking said gaging means in positions oil longitudinal adjustment upon said sleeve, substantially as described.

5. A tool of the character described comprising a substantially cylindrical body; a plurality of cutters arranged at one end of said body; a sleeve in which said body is rotatably mounted; means for holding said body against longitudinal movement in said sleeve; a second sleeve connected With said first mentioned sleeve and in threaded connection therewith for effecting longitudinal adjustment thereof to gage the depth of the out of said cutters; and a lock-nut threaded upon said first mentioned sleeve for locking said gaging sleeve in positions of longitudinal adjustment upon said first mentioned sleeve, substantially described.

G. A tool of the character described comprising a substantially cylindrical body having a head at one end; a plurality of cutters removably secured in said head; a sleeve constituting a grip in which said body is retatably mounted; means for holding said body against longitudinal movement in said sleeve; and non-rotatable means connected with and longitudinally adjustable relative to said sleeve for gagingthe depth of the cut of said cutters, substantially as described. y

7; A tool of the character described com-' prising a substantially cylindrical body having a head at one end containing a plurality of sockets; a plurality of cutters having their shanks engaging said sockets; means "for ren'i'ovably securing said cutters in position in said sockets; a sleeve constituting a grip in which said body is rotatably mounted; nieans for holding said body against longitudinal movement in said sleeve; and means connected with and longitudinally adjustable upon said sleeve for gaging the depth of the cut of said cutters, substantially as described.

8. A tool of the character described comprising a substantially cylindrical body; a plurality of cutters arranged at one end of said body; a sleeve in which said body is rotatably mounted; means for holding said body against longitudinal movement in said sleeve; a second sleeve encircling said first mentioned sleeve for gaging the depth of the cut of said cutters; means carrying said second mentioned sleeve and in screwthreaded connectionwith said first mentioned sleeve whereby rotation of said means upon said first mentioned sleeve efi'ects longit-udinal adjustment of said second mentioned vsleeve upon said first mentioned sleeve; means for locking said secondmentioned sleeve in positions of adjustment relative to said first mentioned sleeve; and a third sleeve interposed between said before mentioned sleeves and in which said body is rotatably mounted and held againstlongi' tudinal movement, scribed.

9. A tool of thecharacter described coinsubstantially as depri'singa substantially cylindricalbody; a

shank engaging a tapering socket provided in one end of said body, there being a transversely extending opening in said body intersecting said socket for the insertion of a key in effecting detachment of said shank;

a plurality of cutters arranged at'the other end of said body; and means constituting a grip substantially completely inclosing said body and in which the latter is rotatably mounted I and held against "longitudinal movement;- substantially as described.

In testimony whereof we have signed our names to. this specification in the presence of two subscribing witnesses,

WILLIAM BENNINGTON. V JACOB GUNZENHAUSER. Witnesses: i

JOSHUA R. H. Porrs,

- Bnar'ron G. Rionannsi 

